How do I split a string by a multi-character delimiter in C

Question

What if I want to split a string using a delimiter that is a word   For example  This is a sentence   I want to split on is and get This and a sentence   In Java  I can send in a string as a delimiter  but how do I accomplish this in C

User · Answer

Based on existing responses on this post  this simplify the implementation     namespace System       public static class BaseTypesExtensions                    lt summary gt              Just a simple wrapper to simplify the process of splitting a string using another string as a separator              lt  summary gt               lt param name  s  gt  lt  param gt               lt param name  pattern  gt  lt  param gt               lt returns gt  lt  returns gt          public static string   Split this string s  string separator                        return s Split new string     separator    StringSplitOptions None

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Here is an extension function to do the split with a string separator   public static string   Split this string value  string seperator        return value Split new string     seperator    StringSplitOptions None       Example of usage   string mystring    one split on me two split on me three split on me four   var splitStrings   mystring Split   split on me

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var dict   File ReadLines  test txt                   Where line   gt   string IsNullOrWhitespace line                   Select line   gt  line Split new char            2  0                   ToDictionary parts   gt  parts 0   parts   gt  parts 1      or       enter code here  line  to xxx gmail com yyy yahoo co in   string   tokens   line Split new char            2  0    ans  tokens 0  to token 1  xxx gmail com yyy yahoo co in

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You can use the Regex Split method  something like this   Regex regex   new Regex    bis b    string   substrings   regex Split  This is a sentence     foreach  string match in substrings       Console WriteLine    0     match       Edit  This satisfies the example you gave  Note that an ordinary String Split will also split on the  is  at the end of the word  This   hence why I used the Regex method and included the word boundaries around the  is   Note  however  that if you just wrote this example in error  then String Split will probably suffice

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You can use String Replace   to replace your desired split string with a character that does not occur in the string and then use String Split on that character to split the resultant string for the same effect

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http   msdn microsoft com en-us library system string split aspx  Example from the docs   string source     stop ONE stop  stop TWO stop  stop  stop THREE stop  stop    string   stringSeparators   new string      stop     string   result          result   source Split stringSeparators  StringSplitOptions None    foreach  string s in result        Console Write    0      String IsNullOrEmpty s      lt  gt     s

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In short   string   arr    This is a sentence  Split new string      is     StringSplitOptions None

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Or use this code    same   new String       Split new      Test Test     StringSplitOptions None

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string s    This is a sentence    string   res   s Split new string      is      StringSplitOptions None    for int i 0  i lt res length  i        Console Write res i      EDIT  The  is  is padded on both sides with spaces in the array in order to preserve the fact that you only want the word  is  removed from the sentence and the word  this  to remain intact

User · Answer

string strData    This is much easier  int intDelimiterIndx   strData IndexOf  is    int intDelimiterLength    is  Length  str1   strData Substring 0  intDelimiterIndx   str2   strData Substring intDelimiterIndx   intDelimiterLength  strData Length -  intDelimiterIndx   intDelimiterLength

[c#] How do I split a string by a multi-character delimiter in C#?

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